Stroke Rate

By the Watta Team · Updated

Stroke Rate: Stroke rate, or strokes per minute (SPM), is the number of complete rowing strokes you take in one minute on the ergometer.

What is Stroke Rate?

Stroke rate measures how many times you complete a full drive-and-recovery cycle per minute. It is displayed on Concept2 monitors as "s/m" (strokes per minute). Stroke rate typically ranges from 18-22 for steady-state training, 24-28 for threshold work, and 30-40+ for race pieces. A common misconception is that a higher stroke rate always means more power — in reality, power comes from the force applied during the drive. Experienced rowers can generate high watts at lower stroke rates through superior technique and drive power. The relationship between stroke rate and split time is a key indicator of rowing economy. Lower rates with the same split mean greater power per stroke.

How Watta Uses Stroke Rate

Watta extracts stroke rate from your erg photos and uses it in the Economy component of the Effort Score (10% weight). The algorithm calculates watts per stroke — a measure of stroke efficiency. Higher watts per stroke indicates greater mechanical efficiency.

Further Reading

Frequently Asked Questions

What does SPM mean in rowing?
SPM stands for strokes per minute — the number of full rowing strokes you complete in one minute. It is also called stroke rate.
What is a good stroke rate for a 2K test?
Most competitive rowers race their 2K at 30-36 strokes per minute. The optimal rate depends on your size, fitness, and technique. Larger rowers may rate lower (28-32) while lighter rowers may rate higher (34-38).
What stroke rate should I use for steady state?
Steady state rowing is typically performed at 18-22 strokes per minute. This allows for a long, powerful drive with full recovery, which develops aerobic fitness and technique.
Does a higher stroke rate mean more power?
Not necessarily. Power comes from the force applied during each stroke (drive). A skilled rower at 24 SPM can produce more watts than a beginner at 30 SPM. Watts per stroke is a better measure of efficiency.
Is it better to row at a higher or lower stroke rate?
It depends on the goal. Lower rates (18-22) build power and aerobic efficiency. Higher rates (30-36) are used in races because they allow more strokes per minute, but only if you can maintain force per stroke.

Related Content

Force CurveThe force curve is a graph on the Concept2 PM5 that shows how much force you apply to the handle during each stroke, used to diagnose rowing technique.Watts (Rowing)Watts in rowing measure the power output on an ergometer, calculated from the pace using the Concept2 formula: Watts = 2.80 / pace³.Steady State RowingSteady state rowing is continuous, easy-paced erging at conversational intensity for 20–90 minutes — the UT2 band, 55–65% of 2K power at 18–22 spm — used to build aerobic fitness.Pace per 500mPace per 500m (also called split) is the standard unit of speed in indoor rowing, representing the time to cover 500 metres, displayed in minutes:seconds format.Stroke Power (Peak Watts)Stroke power is the peak or average watts generated during a single rowing stroke, with the PM5 calculating power from the flywheel acceleration during the drive.Effort Score CalculatorErg Technique GuideFor Beginners
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